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Show that the sequence whose n^(th) term...

Show that the sequence whose `n^(th)` term is `2n^2 + n + 1` is not an A.P.

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MBD-ARITHMETIC PROGRESSION-EXERCISE
  1. The n^(th) term of a sequence is given by Tn = 2n + 7. Show that it i...

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  2. Show that the sequence defined by Tn = 4n + 7 is an A.P. Also, find it...

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  3. Show that the sequence whose n^(th) term is 2n^2 + n + 1 is not an A....

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  4. Find out which of the following sequences are A.P. for those which are...

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  5. Find out which of the following sequences are A.P. for those which are...

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  6. Find out which of the following sequences are A.P. for those which are...

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  7. Find out which of the following sequences are A.P. for those which are...

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  8. Find out which of the following sequences are A.P. for those which are...

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  9. If third term of an A.P. is 18 and seventh term is 30, find the series

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  10. The third term of an A.P. is 25 and tenth term is - 3. Find the first ...

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  11. The 6th term of an A.P. is 12 and the 8th term is 22, Find the 10th te...

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  12. In an A.P. fourth term is - 13/2 ,seventeenth zero and last one is 21....

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  13. How many terms are there in A.P. 5, 11, 17, ....299 ? Also find 16th t...

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  14. How many numbers between 100 and 500 are exactly divisible by 7 ?

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  15. For what value of n, the nth term of the series 9, 7, 5....and 15, 12,...

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  16. The 7th term of an A.P. is zero. Prove that 25th term is twice the 16t...

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  17. Find the 20th term from the end of the following arithmetic progressio...

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  18. Find the 20th term from the end of the following arithmetic progressio...

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  19. How many numbers of two digits are divisible by 6 ?

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  20. Which term of the sequence 24, 23 1/4, 22 1/2, 21 3/4, ….. is the firs...

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